摘要
以端羟基聚丁二烯液体橡胶(HTPB)为原料,以有机酸酐为羧化剂,采用端基转化法合成出了端羟羧聚丁二烯液体橡胶(HCTPB)。结果表明:在反应温度80℃、反应时间2h的工艺条件下,随着羧化剂用量的增加,HCTPB的羧基含量增加,且转化率都在60%以上。采用红外分析,对不同羧基含量的HCTPB微观结构进行测定,顺、反、1,4与1,2结构含量分别与原料HTPB相近,端基转化过程对HTPB主链微观结构没有影响。
Hydroxyl-carboxyl-terminated polybutadiene (HCTPB) liquid rubber was synthesized by a conversion technique of terminal groups with hydroxyl-terminated polybutadiene (HTPB) liquid rubber as raw material and organic acid anhydride as carboxylation agent. The results showed that technique conditions were temperature 80 ℃ and time 2 h,the content of carboxyl group increased with the increase of amount of the carboxylation agent and the conversion was more than 60%.The contents of cis-1,4,trans-1,4 and 1,2 units were almost equality with raw material HTPB by IR analysis for the determination of the microstructure of HCTPB with different contents of carboxyl group, the conversion process of terminal groups had no effect on the microstructure of the main chain of HTPB.
出处
《石化技术与应用》
CAS
2000年第1期9-12,共4页
Petrochemical Technology & Application
基金
"八五"国家重点科技攻关项目! ( 85 -10 -0 1-2 7-18)。
关键词
端羟羧
聚丁二烯
液体橡胶
转化法
橡胶
hydroxyl-carboxyl-terminated polybutadiene liquid rubber
organic acid anhydride carboxylation agent
conversion technique
